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Fourth generation iPhone. Repair is straightforward, but the front glass and LCD must be replaced as a unit. GSM / 8, 16, or 32 GB capacity / Model A1332 / Black and White. This page aims to help users troubleshoot, fix, and seek help for the iPhone 4.

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random blue flashing screen + dual vibration + dual sonar beep

Hi, since i transformed my iphone (v4, IoS 4.2.1, jailbroken) with a white kit, i have a strange issue never faced before. From time to time, on a random basis, my iphone does a 1sec flashing blue screen + dual vibration + dual echo sonar like beeping.

It's not the usual signal for an email nor sms or notification, sound is different. And doesnt signal anything, just acts like that randomly. I wish it stayed quiet ! :)

I was wondering if someone would know how to fix this annoying issue ? already tried a search on the net, but not exactly documented. Also already tried a hard reset and a system reinstall, but unsucessfully fixed that.

I'm not sure if it's related to the white kit tranformation or something else...

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This definitely sounds hardware related. I don't think it's software or jailbreak related as I've never heard of this issue. Did u install the conversion yourself, or did u have it done elsewhere? I would reopen the device and check all connectors to the LogicBoard.

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did install myself very carefully, but did suspect it could be that. As i still need to fix the proximity sensor too (it seems i need to darken a part to allow it to work with a white kit) i'll double check... Is there any place where some hardware alarm would be documented ?

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(update) i observed the thing and in fact it seems to happen only when it's network data connected during daytime... weird. i'll see if another cautious reopen and check will fix that...

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Zark will be eternally grateful.
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